<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>城市联动</title>
    <link rel="stylesheet" href="city.css">
    <script src="jquery-3.3.1.min.js"></script>
    <script src="cityData.js"></script>
</head>
<body>
<div class="input-city">
    <input type="text" class="asdCity" id="asdCity" placeholder="选择省/市/区">
    <div class="city-pop">
        <img src="up.png" alt="">
    </div>
</div>
<script src="city.js"></script>
<script>
    City(".city-pop");
</script>
</body>
</html>